Coaches Question about petitioning into DP

[GymCAMom]

I'm aware that there's a possibility of petitioning into DP L7 (from Xcel), but the child must be 12. Is it 12 years old when petitioning or 12 years old for the season? My daughter will be 11.5 next summer and her bday falls late Decemeber to turn 12. Thanks!